PEAK_ I need to know and I can't find it

Hi, I need to know what my Peak is, and I have read that I can find it on the Bulb page. However, I can’t find it.
I need to start heating and I’m afraid my bill will increase too much. Therefore, I need to know what my Peak is.
On the other hand, the peak is the period of time in which electricity gets cheaper, right?
Many thanks

Are you on a dual rate tariff such as Economy 7? If not, you don’t have a peak or off-peak rate for electricity cost.

If you do have E7, this might help you: